Three benefits of the plow are greater possible yields, the use of residue of the remaining crops as fertilizer and a reduced amount of weeds. The correct options among all the options that are given in the question are the first, second and the penultimate option. I hope that the answer has come to your great help.
Start attending meetings alot of political groups host meeting that any age can attend. And do research on your own. Go to rallys and stuff. Hope it helps alittle (: